Chemistry Review

Reading the Periodic Table

100

What information on the periodic table tells you the number of protons that an element has?

The atomic number tells you the number of protons that an element has in 1 atom.

200

What are the vertical (up and down) columns on the periodic table called?

The vertical columns (up-and-down) on the periodic table are called groups.

300

What are the horizontal (side-to-side) rows on the periodic table called?

The horizontal (side-to-side) rows are called periods. 

400

What is the name of the scientist who first created the periodic table of the elements?

Dmitri Mendeleev

500

For any element, which one is larger: the atomic number, or the atomic mass?

The atomic mass will be larger. 

Parts of an Atom

100

The inner part of an atom that contains the proton and the neutron is called the __________.

Nucleus

200

These particles have a positive charge and are found inside the nucleus.

proton

300

These particles are located within the nucleus, and have no charge.

Neutron

400

These particles are negatively charge and are found outside the nucleus.

electrons

500

Most of the mass of an atom is located here.

nucleus

Chemical Bonding

100

When atoms form chemical bonds to one another, they form a ___________. 

molecule

200

When atoms share electrons in a chemical bond equally, this is called a _______ _________ bond.

Nonpolar covalent bond

300

The kind of bonding that happens between a metal and a nonmetal is called ________ bonding.

Ionic bonding

400

Is nail polish polar or non-polar?

Nail polish is non-polar.

500

What is the difference between polar covalent bonding and nonpolar covalent bonding?

In nonpolar covalent bonds, 2 atoms share electrons equally. In polar covalent bonds, the electrons in the bond are shared between 2 atoms, but they are not shared equally.

Periodic Trends

100

How does atomic radius change going down a group?

Atomic radius increases

200

Does atomic radius increase, decrease, or stay the same as you move across the periodic table from left to right?

Atomic radius decreases as you move across the table from left to right.

300

Moving from left to right across the periodic table, does ionization energy increase, decrease, or stay the same?

Ionization energy increases as you move from left to right across the periodic table.

400

Which element has a larger atomic radius: Potassium (K) or Bromine (Br)?

Potassium (K)

500

Which element on the periodic table is the most reactive? 

Francium (Fr)

Chemical Reactions and Balancing Equations

100

3H₂O 

Which number in the chemical formula is the coefficient?

In 3H₂O, the coefficient is 3. 

200

What kind of chemical reaction is this?

2H₂ + O₂ --> 2H₂O

This is a synthesis reaction. 

300

How can you recognize a combustion reaction?

Reactants: a hydrocarbon (C_xH_y) + O₂

Products: CO₂ + H₂O

400

What kind of chemical reaction is this?

Na₂SO₄ + SrCl₂ -->  NaCl + SrSO₄

Double Replacement

500

Balance this equation:

Na₂SO₄ + SrCl₂ -->  NaCl + SrSO₄

Na₂SO₄ + SrCl₂ -->  2NaCl + SrSO₄